Vray 3.6 for Rhino

[SHoutzager]

Thanks for shipping!!

[Pretty Picture Girl]

Unfortunately I can not test it, it always crashes on start up.
I run the latest Rhino 5 64Bit & Visual Arq.

Uninstalled and rolled back to 3.4.

When will Vray work with Rhino 6.0 by the way?

[simandoff]

Our support will contact you asap. We have internal builds of Rhino 6 support. It will be supported in the next service pack of V-Ray in about a month or so.

Regards,
Boris Simandoff
Director Engineering
Chaos Group

[konstantin_chaos]

Unfortunately I can not test it, it always crashes on start up.
I run the latest Rhino 5 64Bit & Visual Arq.

Uninstalled and rolled back to 3.4.

When will Vray work with Rhino 6.0 by the way?

Hi Pretty Picture Girl,

Can you give us some more information on your issue with 3.6 ?
Do you see any messages that indicate the cause of the crash?
If not, we can arrange a TeamViewer session so that we can investigate further on your system.

Thank you for letting us know about this problem.

Regards,
Konstantin

[Pretty Picture Girl]

Hi Konstantin,

I mailed the details already to sales.software@chaosgroup.com.

Regarding team viewer unfortunately this is not an option, as I have no license for it and will not purchase one (way overpriced!).
Using the free version for anything business related (which talking about my business software Vray surely is) is not permissible.

If you want you can Skype me though.

The machine is an HP Z800 with 24GB Ram.

The previous version of Vray ran flawlessly.

Here what ran without issues:

V-Ray 3.40.01 for Rhinoceros 5 SR13
Build: 697 Hash: 84c56f1 Date: Apr
4 2017
V-Ray NeUI Build: 697 Hash: 2e2fab6 Date: Apr
4 2017
V-Ray Core Version: 3.40.04
V-Ray APPSDK Version: 1.08.03
Copyright © 2017 Chaos Software Ltd. All rights reserved.
Dongle SN 13289495

Rhino
Version 5 SR14 64-bit
(5.14.522.8390, 22/05/2017)
Commercial
SN: 4-1500-0101-100-0037939-33051

Windows 10 64Bit
Version 1709
Built 16299.192

Following directly after the new installation I did a restart. Once I start Rhino it crashes & sends an automatic error log to McNeel.
They already confirmed that its Vray related and that they inform you about this:
"...It appears the crash happened in a plug-in called Vray. I have forwarded the crash information to the developers of Vray. Thank you for helping us improve Rhino. Best Regards, Tim Hemmelman Rhinoceros Development Robert McNeel & Associates Ref ID: 0f3ddf79-b5db-4aaf-9bf3-b6f48ddf0261..."

Hope that helps,

Pretty

[Peter.Chaushev]

Hello,

We were able to reproduce the problem and our Dev team just found a solution. The fix will be available soon! Please stand by.

Kind regards,
Peter

[Micha]

Our support will contact you asap. We have internal builds of Rhino 6 support. It will be supported in the next service pack of V-Ray in about a month or so.

Regards,
Boris Simandoff
Director Engineering
Chaos Group

Sounds like bad news. A R6 version per next SR only? I hope we get the chance of a second SR after the Rhino 6 version is released .... .
(In the past the R6 version was available as the R5 version was ready .... good old nightly beta times.)

[Peter.Chaushev]

Pretty Picture Girl , please go to https://download.chaosgroup.com/ , download V-Ray 3.6 for Rhino once again (the build is updated), install it, and let us know if this resolves your problem.

Kind regards,
Peter

[Pretty Picture Girl]

Hi Peter,

thanks, it's working now.

One issue I noticed is with materials though.
I reopened the file exactly in the state I last used it with Rhino 5 & Vray 3.4 to create the sample file with Rhino 5 & Vray 3.6.

The result with the new version is a lot different. From a user standpoint thats a pain in the neck.
I hope that does not mean I have to readjust hundred of material files...

Transparency mapping seems messed up when using the CPU&GPU combination. CPU alone works, GPU alone does mess up the transparency mapping, in all cases some materials look different than before.

See attached samples. I like to stress, I did not change any settings in the file. Only installed the new Vray version. The tarmac is very black now for example.

My graphics card is a bit dated though. Quattro 5000.

Still it would be nice to use CPU & GPU together, especially on older machines.

Best regards,

Pretty

[Peter.Chaushev]

Glad to hear your compatibility issue is gone.
Regarding the opacity map problem - this is an issue when using a single Diffuse layer with its option "Diffuse Map Alpha as Transparency" enabled. It should be fine on CPU, but no transparency achieved on GPU CUDA. This is a known limitation and is due to the outdated material structure (using single BRDFDiffuse, BRDFRefraction, etc. layers).
If you use a V-Ray BRDF layer instead, place the texture in its Diffuse slot and then enable Opacity's "Diffuse Texture Alpha" you will be able to render the material properly on GPU as well as CPU.

Kind regards,
Peter

[Pretty Picture Girl]

Thanks so much Peter. I'll try that. Still it will be painful changing old materials now.
Have a fine weekend.

[Peter.Chaushev]

There is only so much we can do to keep supporting outdated material structure without inhibiting the advancement of V-Ray technology. You will still be able to render perfectly fine on CPU, but the newer GPU CUDA renderer will not support a solution for this particular problem out of the box (and thus my suggestion for recreating the material manually).

Please let us know if you have any other issues with the new update or simply how you find working with it.

Have a nice weekend,

Peter

[Pretty Picture Girl]

Hi Peter,

tried what you suggested. Despite having to change materials I have to say it's a much faster way to create decals this way. So, great suggestion. Thanks.
Next step for me, try volumetric underwater lights

[Pretty Picture Girl]

Hi Peter,

here is one more thing, I did some more tests on CPU Vs CPU & GPU vs GPU, used the sample file for this.
Seems there are still issues.
CPU works fine, the others not (See "Gridded gaps").

;-(

As stated before it, the combined use would probably make especially users with older machines happy if it works.
In my case HP Z800 (2x X5650@2.67GHz) & 24GB RAM & Quattro 5000.

If your response is that I need to upgrade the machine what would be the best to augment in a first step to use Vray to the max?
More RAM? X5690 Processors? Better/additional graphics card?

Thanks,

Pretty

[Peter.Chaushev]

As my colleague has already mentioned in your email correspondence, the issue you have encountered is due to insufficient GPU memory.
To resolve this, simply open the V-Ray Asset Editor Settings' right panel > Raytrace (advanced view) > GPU Textures and choose either "On-demand mipmapping" or "Resize textures".
If you would like to see how you machine fares in comparison with those of other V-Ray users, visit https://www.chaosgroup.com/vray/benchmark .

Kind regards,
Peter